The ISL29009 is a light-to-current silicon optical sensor combining a photodiode and current amplifiers on a single monolithic IC. Similar to human eyes, the photodiode has peak sensitivity at 550nm and spans from 400nm to 700nm, rejecting UV light and IR light. The input luminance range is from 0.3 lux to 10,000 lux. The integrated non-linear current amplifier boosts and converts the photodiode signal in a square root fashion, extending the light input dynamic range while maintaining excellent sensitivity at dim conditions with low lux levels. The device consumes minimal power over a wide range of ambient lux levels because the current consumption ramps at a square root fashion. A dark current compensation circuit aids the photodiode to minimize temperature dependent leakage currents in the absence of light, improving the light sensitivity at low lux levels. In addition, the ISL29009 has an EN pin that can be used for a polling scheme extending portables' battery life. The ISL29009 is housed in an ultra compact 2mm x 2.1mm ODFN plastic case surface mount package. Operation is rated from -40 °C to +85 °C.


  • Non-linear current output
  • 0.3 lux to 10,000 lux range
  • Dark current compensation
  • Temperature compensated
  • Human eye response
  • 1.8V to 3.3V supply range
  • Low supply current
  • Fast response time
  • 6 Ld ODFN: 2mm x 2.1mm x 0.7mm
  • Pb-free (RoHS compliant)


  • Display and keypad dimming for:
    • Mobile devices: Smartphones, PDAs, GPS
    • Computing devices: notebook PCs, webpads
    • Consumer devices: LCD-TVs, digital picture frames, digital cameras
  • Industrial and medical light sensing

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active HODFN Reel 3000

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL29009 Datasheet Datasheet PDF 835 KB
PCN12015 - Moisture Sensitivity Level Change for the Listed Intersil 6-lead ODFN Packaged Products Product Change Notice PDF 112 KB
PCN10053 - Alternate Manufacturing Site for Assembly of Intersil ODFN Packaged Products - Hana Microelectronics Public Co., Ltd. Lamphun, Thailand Product Change Notice PDF 95 KB
PLC18009 - Q2 Standard EOL Notice Product Life Cycle Notice PDF 345 KB
Eye-Safety Exposure Calculator Software & Tools - Others XLSX 35 KB

Boards & Kits

Part Number Title Type Company
ISL29009IROZ-EVALZ Non-Linear Output Current, Low Power Ambient Light Photo Detect IC Eval Board Evaluation Renesas